Automobile acoustic control navigation device and method

The invention discloses an automobile acoustic control navigation device and an automobile acoustic control navigation method. The automobile acoustic control navigation device is in communication with a background system through a user mobile phone and comprises a switching module, a navigation module, a back-up module, an automobile mainframe, a display screen, a Bluetooth communication module and a judgment module, wherein the switching module is connected with the navigation module, the back-up module, the automobile mainframe, the display screen, the Bluetooth communication module and the judgment module, and the judgment module is connected with the Bluetooth communication module; when detecting a first control command, the switching module connects the navigation module to a video channel of the back-up module and connects the video channel of the back-up module to the display screen to enter the navigation state; the switching module controls the user mobile phone and the background system to in communication connection with each other according to a push-to-talk signal, the background system acquires a navigation information point according to a voice signal acquired by the user mobile phone and feeds the navigation information point back to the navigation module, finds out a geographic coordinate corresponding to the navigation information point in pre-stored map data, and acquires the current geographic position of a user to generate a navigation line so as to realize acoustic control navigation.